Truing device for grinding wheels



Aug. 17, 1926. 1,596,701 A. WlLLIAMS TRUING DEVICE FOR GRINDING WHEELS Filed May 15, 1922 5 Sheets-Sheet 1 Aug. 17, 1926. 11,596,701

A. WILLIAMS TRUING DEVICE FOR GRINDING WHEELS Filed y 1922 I5 Sheets-Sheet 2 Aug. 17, 1926. 1,596,701

A. WILLIAMS TRUING DEVICE FOR GRINDINGAWHEELS Filed May 15, 1922 3 Sheets-Sheet 3 2 I it k flrfhugw $1 3125 Patented Aug. 17, 1926.- i

' UNITED STATES PATENT o mcE.

.ABTHUR WILLIAMS, OF GRAN D RAPIDS, MICHIGAN, ASSIGNOR '10 WILMARTH -& MOB- MAN,COMPANY,OF GRAND RAPIDS, MICHIGAN, A. CORPORATION OF MICHIGAN.

rauma nnvrcn r03 GRINDING WHEELS.

Application filed m 15, 1922. Serial No. $1,114.

This invention relates to a truing device for grinding wheels, ada ted and designed to true the periphery 0 grindingwhe'eIs either horizontally across the same or at any desired angle, to the vertical. A primary object and purpose of the present invention is to make a device of this character which is to be mounted on the hood covering the wheel to be trued and provide the same with various means of adjustment for the different angles of wheel surfaces to be trued and for feeding the truing point across the wheel by hand, together with manually .operable means for moving the truing point into or out of engagementwith the wheel. The invention includes various novel constructions. and arrangements of parts for attaining the above described and other ends not stated, as will appear fully, as under standing of the invention is had from the following description, taken in connection with the accompanying drawings, in which Fig. 1 is a front elevation of a. grinding wheel and hood therefor with my invention applied thereto.

Fig. 2 is a side elevation thereof, withparts in section.

Fig. 3 is a vertical section taken on the plane of line 33, of Fig. 5.

Fig. 4 is a side elevation looking at the opposite side from that shown in Fig. 2, and

Fig. 5 is a Vertical section substantially on the plane ofline 55, of Fig. 4.

Like reference characters :refer to like parts in the several figures of the drawings. V

The grinding wheel :1 is mounted for rotation on a horizontal spindle 2 and its upper portion iscovered by a hood 3 permanently connected in any suitable manner to the stationary supporting part of the grinding machine, a fragmentary part of said support being shown in Figs. 2 and 4.

- The hood at its central upper point is slotted,

as at 4 for the entrance or tool.

A post 5 is cast integral with the hood at one side, extending upwardly therefrom. A rod 6 passes throu h the upper end of the post'and is pinne securely thereto, at each end extending beyond the post and being threaded to recelve clamping nuts 7. A table 8 is located over the post and formed of the dressing point spect to the post'and clamped by nuts 7 in any position to which adjusted. The table is formed at its upper side and longitudinally thereof with guides 10 substantially V- Y shaped with respect to each other, connected at one end by an integrally cast cross member 8.

A slide-11 is slidably mounted onand over the guides 10 having downwardly extending cooperating guide portions 11 to engage therewith, the usual adjustable gib 12 being interposed at one side to take up wear. A threaded rod 13 is mounted lengthwise of the table 8 and between the guides 10, passing through the part 8, and having an operating handle or crank 14 secured to its end. At its opposite end portion, the rod passes through an interiorly threaded sleeve 16 formed at the lower end of a stud 15 which passes through the slide 11 and is equipped with a securing nut 15 at its upper end as shown in Fig. 3. Betweenone of the nuts 7 audit lug 9, an indicating scale.

An adjusting screw 20 is rotatably mounted in and passes through the upper end portion 19*, said Screw being located in the recess and at its upper end above the post having an operating wheel 20 secured there-' to. A slide 21 with cooperating guides 21 is slidably mounted for vertical movements on the post. Against the outer face of the slide, a member 22 is placed, having :1 lat erally extending off-set 22" at its lower portion which at its end is formed into a vertical sleeve 23. A dressing tool 24 having a dressing point 25 at its lower end is adjustably mountedin the sleeve, bei-n held in any desired position by set screw 23'. A

stud 26 passes through the slide 21 and member 22, .at its inner endhaving an interiorly threaded nut 27 through which the screw passes, and at its outer end a clamping nut 26 which serves to clamp member 22 to the slide. It is obvious that the member 22 and attached dressing tool may be angularly adjusted wtih respect to the slide to any desired position and clamped in such position.

The angular adjustment of the member 22 carrying as it does the dressing tool 24. is of value as with such adjustment a more exact and nicer fitting of the dressing point may be had and also a different part of the point may be brought into play on the wheel being dressed should a portion or face thereof become worn, and this without changing the setting of the tool.

The lower end of the tool with its dressing point 25 may be passed through the slot 4 in the hood 3 and the point brought into dressing contact withthe wheel. In Figul, the wheel has a horizontal surface to be dressed and the table 8 is positioned horizontally. By turning the crank 14, the slide I 11 with the attached devices thereon may be moved back and forth so that the point 25 maybe carried across the outer curved sur face of the wheel 1, dressing it to size as the wheel is rotated. In Figs. 2 and 4, the

'nding wheel 1 has a bevelled outer surace and the table 8 is tilted to correspond, whereupon the dressing point may be moved in correspondence with the bevel. It is of course obvious that if the bevel was in the by the crank 14. The constructionjs relatively simple and inexpensive to manufacture. The mounting of the same on the hood reduces the device in size and it is not necessary to remove the device when it is not in use. and replace it when it is to be used. The device is practical and eflicient in every way. The invention is defined in I the claims appended hereto and I consider myself entitled to all forms of construction coming within their scope.

I claim 1. In a construction of the class described,

a grinding wheel, a hood thereover having a slot in its upper side, a vertical post projecting from the hood at one side of the slot, a table pivotally mounted on the post to turn about a horizontal axis, means for securing the table in any position to which turned, a slide slidably mounted on the table, means for manually moving the slide over the table in either direction, a post at one side of the slide, a second slide slidably mounted for vertical movements on the post, a member rotatably -mounted on the second slide, means to clamp said member in any position to which adjusted, means for manually raising or lowering said second slide, a sleeve on said member, a dressing tool adjustably mounted in the sleeve and extending through the slot in the hood, and a dressing point at the lower end of the tool, substantially as described.

2. In a construction of the class described, a rotatably mounted grinding wheel, a hood thereover having a transverse slot therein at its upper side, a vertical post extending from the hood at one side of the slot, a rod extending through the post horizontally -and at right angles to the' axis of rotation of the wheel and secured thereto, a table 10- cated above the post, lugs depending fromthe t.ble one at each side of the post through which said rod passes, clamping nuts on the ends of the rod, a slide slidably mounted on the table to move in a direction at right angles to the length of the rod, means for manually moving the slide back and forth on the table, a, vertical post at one side of the slide, a second slide mounted for vertical sliding movements on the post, means for manually moving the second slide, a

member pivotally mounted to turn about a horizontal axis connected with the second slide, said member having a lateral ofi-set terminating in a vertical sleeve, a dressing tool passing through the sleeve and provided with a dressing point at its lower end, and a set screw passing through the sleeve against the tool. i

In testimony whereof I aflix my signature.

ARTHUR WILLIAMS. 

